Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa78d98229fabbd0de639d6a41dbfec3e7fb44824ea4baf37194371155c09ca3' 
  AND token = 'XM7saCs25h70JD7+90lJ/0idd6Hrhm2dU4w56OXTClA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}